What was the most significant moment in the development of rock'n'roll? June 26 1954, when Elvis laid down "That's All Right"? July 6 1957, when Lennon met McCartney at a church fete? According to Martin Millar, December 4 1972, when Led Zeppelin played at Green's Playhouse in Glasgow, was the single greatest night in rock history. Millar's semi-autobiographical tale is a passionate account of what it meant to be young, spotty and in love when Led Zeppelin IV came out, presented in the authentic voice of a dreamy 14-year-old whose other great obsessions are lusting after girls and vanquishing the Monstrous Hordes of Xotha. Millar favours a simple style and is not afraid to cut corners: "I'm not going to say much about school. After all, you were at school. You know what it's like." But it's all part of the charm - the narrator explains that he has subjected his account to the "nice and big stage", replacing fancy adjectives "with words like 'nice' and 'big', which I've liked ever since I was told not to use them at school". It's quite nice; but not very big.